Battery



Original Filed Oct. 31. 1924 mnmtoz Pabiq rlvsa Patented Apr. 20, 1926.

UNITED STATES PATENT OFFICE.

PABLO A. BARBOSA, OF BUGA, VALLE, COLOMBIA, ASSIGNOR 0F THIRTY PER CENT '10 ALEGANDRO VELASQUEZ, 3., OF NEW YORK, N. Y.

BATTERY.

Application filed October 31, 1924, Serial No. 747,002. Renewed March 16, 1926.

To all whom it may concern:

Be it known that I, PABLO A. BARBOSA, a citizen of the United States of Colombia, South America, residing at Buga, Valle, Colombia, South America, have invented certain new and useful Improvements in Batteries, of which the following 1s a specification.

This invention relates to dry batteries and has for its object to produce a cell which will have a high amperage output, and a longer .useful life than is generally obtained from cells of this type. A further object is to provide a cell in which a larger percentage of the zinc and electrolyte are consumed and which will have a lower percentage of waste.

In the accompanying drawing,

Figure 1 is a longitudinal sectional view of the cell,

Fig 2 is a section showing a part of the interior in elevation, and a Fig. 3 is a horizontal section on the line 3-3 of Fig. 1.

Surrounding the central carbon electrode 1 is one of the usual compositions 2 consisting of powdered carbon, graphite, and manganese dioxid, contained in a suitable fabric bag 3. The bag has secured upon its surface a number of webs 4 of cardboard or heavy cord, or material of a similar pliable nature. The cardboard webs are suitably secured on the bottom and top of the fabric bag, as for example, by pitch; if cord is used, it may be wound around, or may be woven into the fabric bag. The filled bag and cardboard or cord casing is proportioned so as to sliploosely within the outer zinc receptacle, leaving a narrow space 5 between the outer surface of the cardboard web and the zinc container 6. The cardboard webs are spaced as shown, preferably in wide 7 and narrow 8 channels. Within the wide channels is packed the electrolyte 9, up to the top of the fabric bag. Above the top of fabric bag is an air space 10, and then is placed a parafined or waterproof cardboard or thin wood partition 11 which fits very tightly around the carbon electrode 1 and also within the zinc container 6. Above the partition is provided a layer of a viscous water-sealing substance, such as a heavy oil 12, etc.; above the oil is a second partition 13, and above this the usual layer of pitch 14, through which the carbon contact 15 projects. A vent 16 is provided, projecting through the top of varied, but I have found the following to be operative: 50 to by volume of corn starch, 20 to 18% by volume of ammonium chloride, 15 to 12% by volume of zinc chloride, 15 to 10% by volume of sodium bicarbonate. v

To the electrolyte mixture is added sufficient Water to moisten the mass to the consistency of a paste, which is then packed in therein, a depolarizing mass comprising car-.

bon, graphite, and manganese dioxide, partitions between the depolarizing mass and the metal container, spaced bodies of electrolyte between said partitions, a space between said partitions and the metal container, said space providing room for the expansion of said electrolyte.

2. Adry cell comprising a metal container serving as an electrode, a carbon electrode and depolarizing mass therein, said mass spacedfrom said container, partitions between the said mass and the container providing a plurality of spaces, an air space above the mass of depolarizer and a vent extending from said air space to the outside of the cell.,

3. A dry cell comprising electrodes and an electrolyte, a plurality of compartments within the cell adjacent the outer wall, electrolyte in some of said compartments, and spaces providing a passage for said electrolyte to expand into unoccupied compartments.

In testimony whereof I hereby afiix my signature. 

